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Acoustics pioneer Amar Bose, founder and chairman of the audio technology company Bose Corp., known for the rich sound of its small tabletop radios and its noise-canceling headphones popular among frequent fliers, has died at age 83. Bose's death was announced Friday by the company's president, Bob Maresca, and the Massachusetts Institute of Technology, where Bose began his acoustics research and was on the faculty for more than 40 years.

How incoming enemy aircraft were detected before the invention of radar Strange acoustic "ears" before radar; old time pictures of listening posts ...

CHAMPAIGN, Ill. — In one University of Illinois lab, invisibility is a matter of now you hear it, now you don’t. Led by mechanical science and engineering professor Nicholas Fang, Illinois researchers have demonstrated an acoustic cloak, a technology that renders underwater objects invisible to sonar and other ultrasound waves. “We are not talking about science fiction. We are talking about controlling sound waves by bending and twisting them in a designer space,” said Fang, who also is affiliated with the Beckman Institute for Advanced Science and Technology. “This is certainly not some trick Harry Potter is playing with.” While...

When Bryan speaks, then I rejoice. His is the strange composite voice Of many million singing souls Who make world-brotherhood their choice — Vachel Lindsay, American poet, 1915 William Jennings Bryan was rarely at a loss for words. His impassioned oratory spellbound congressmen during his two terms in the U.S. House and thrilled thousands of voters during the presidential campaigns of 1896 and1900. But during his third run for the White House, 100 years ago, Bryan had trouble speaking in the intimacy of his own home. “Mr. Bryan seemed a little nervous when he first started, much more so, he...

It was an idea born out of curiosity in the physics lab, but now a new type of ‘laser’ for generating ultra-high frequency sound waves instead of light has taken a major step towards becoming a unique and highly useful 21st century technology... ...have produced a new type of acoustic laser device called a Saser. It’s a sonic equivalent to the laser and produces an intense beam of uniform sound waves on a nano scale.

It is a tantalizing tape recording, full of static hiss, popping sounds, and eerie faraway voices. And for years, there has been debate over whether it proves there was a plot to kill President Kennedy. Now, a new analysis of the tape recorded by a Dallas police officer on the day Kennedy was assassinated casts further doubt on the lingering conspiracy theories. Although some previous studies have suggested that one of the sounds on the tape is a gunshot from the infamous "grassy knoll," forensic acoustics expert Bob Berkovitz said it was extremely unlikely that the sound was gunfire. "The...

Posted on Thu, Nov. 21, 2002 Museum curator seeks to solve JFK mysteryBY MIKE COCHRANKnight Ridder Newspapers DALLAS - (KRT) - It was 39 years ago today, a Friday, in fact, that President John F. Kennedy was slain on the streets of Dallas.For researchers such as Gary Mack, the echoes of gunfire in Dealey Plaza remain as haunting as ever.Maybe more so."There's crazy stuff going on," Mack says. "It's so screwy, now, that there are people out there who are actually confessing to having a role in the crime."There are people who claim they were on the grassy knoll...